<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<script type="text/javascript">
			
			function Person(name , age , gender){
				this.name = name;
				this.age = age;
				this.gender = gender;
			}
			
			//修改Person原型的toString
			Person.prototype.toString = function(){
				return "Person[name="+this.name+",age="+this.age+",gender="+this.gender+"]";
			};
			
			
			//创建一个Person实例
			var per = new Person("孙悟空",18,"男");
			var per2 = new Person("猪八戒",28,"男");
			
			//当我们直接在页面中打印一个对象时，事件上是输出的对象的toString()方法的返回值
			//如果我们希望在输出对象时不输出[object Object]，可以为对象添加一个toString()方法
			//Person[name=孙悟空,age=18,gender=男]
			/*per.toString = function(){
				return "Person[name="+this.name+",age="+this.age+",gender="+this.gender+"]";
			};*/
			
			var result = per.toString();
			//console.log("result = " + result);
			//console.log(per.__proto__.__proto__.hasOwnProperty("toString"));
			console.log(per2);
			console.log(per);
			
			
		</script>
	</head>
	<body>
	</body>
</html>
